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Journal ArticleDOI

UPARSE: highly accurate OTU sequences from microbial amplicon reads

Robert C. Edgar
- 01 Oct 2013 - 
- Vol. 10, Iss: 10, pp 996-998
TLDR
The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% correct bases commonly reported by other methods.
Abstract
Amplified marker-gene sequences can be used to understand microbial community structure, but they suffer from a high level of sequencing and amplification artifacts. The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% incorrect bases commonly reported by other methods. The improved accuracy results in far fewer OTUs, consistently closer to the expected number of species in a community.

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Citations
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Journal ArticleDOI

Why are some microbes more ubiquitous than others? Predicting the habitat breadth of soil bacteria

TL;DR: It is demonstrated that genomic information can be used to infer microbial traits that are difficult to measure directly and build trait-based predictions of the biogeographical patterns exhibited by microbes.
Journal ArticleDOI

Protist communities are more sensitive to nitrogen fertilization than other microorganisms in diverse agricultural soils

TL;DR: It is suggested that protists are the most susceptible microbiome component to the application of nitrogen fertilizers, which could help in reducing the dependency on exogenous unsustainably high fertilization and pesticide applications.
Journal ArticleDOI

Greatest soil microbial diversity found in micro-habitats

TL;DR: The results show microaggregates support highly diverse microbial communities, including several unidentified genera, and a weighted proportional whole soil diversity, which accounted for microbes found in aggregate fractions and resulted in 65% greater bacterial richness and 100% greater fungal richness over independently sampled whole soil.
Journal ArticleDOI

Biochar decreased microbial metabolic quotient and shifted community composition four years after a single incorporation in a slightly acid rice paddy from southwest China.

TL;DR: It is suggested that biochar amendment may increase microbial C use efficiency and reduce some microorganisms that are capable of decomposing more recalcitrant soil C, which may help stabilization of soil organic matter in paddy soil in long term.
Posted ContentDOI

UCHIME2: improved chimera prediction for amplicon sequencing

Robert C. Edgar
- 12 Sep 2016 - 
TL;DR: UCHIME2 is described, an update of the popular UCHIME chimera detection algorithm with new modes optimized for high-resolution biological sequence reconstruction (“denoising”) and other applications and that UCHIME2 achieves higher detection accuracy than previous methods.
References
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Journal ArticleDOI

Search and clustering orders of magnitude faster than BLAST

Robert C. Edgar
- 01 Oct 2010 - 
TL;DR: UCLUST is a new clustering method that exploits USEARCH to assign sequences to clusters and offers several advantages over the widely used program CD-HIT, including higher speed, lower memory use, improved sensitivity, clustering at lower identities and classification of much larger datasets.
Journal ArticleDOI

UCHIME improves sensitivity and speed of chimera detection

TL;DR: UCHIME has better sensitivity than ChimeraSlayer (previously the most sensitive database method), especially with short, noisy sequences, and in testing on artificial bacterial communities with known composition, UCHIME de novo sensitivity is shown to be comparable to Perseus.
Journal ArticleDOI

Database resources of the National Center for Biotechnology Information

TL;DR: In addition to maintaining the GenBank(R) nucleic acid sequence database, the National Center for Biotechnology Information (NCBI) provides data analysis and retrieval resources for the data in GenBank and other biological data made available through NCBI’s website.
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